acidness

The principle of plating bronze by chemical displacement and control measures of coat composition are introduced. To reduce Sn 2+ content and add acidness of plating bath is beneficial to stabilization. To add addition can also raise stability of plating bath.

介绍置换镀锡青铜的原理及镀层成分控制措施，在镀液中降低Sn2+含量、增加镀液的酸度有利于镀液的稳定，加入添加剂也可提高镀液的稳定性。

The meteorological indexes and mathematical simulation equations for apple's sugariness, acidness and hardness are given, too.

井提出了苹果含糖量、含酸量及硬度的气象数学方程与适宜气象指标。

The Strong or Weak Influence of Hydrogen Bond on Acidness of Organic Compounds

氢键对有机化合物酸性强弱的影响

The manufacturing principle and feature of strong acidness electrolytic water were introduced; The distinctive advantages and applied prospects for agricultural production were commented on in this paper.

介绍了强酸性电解水的制造原理、特性，在农业生产中的应用价值，评述了强酸性电解水技术的优点及应用前景。

There are many factors to affect the strong or weak of acidness of organic compounds. The paper expresses the strong or weak influence of Hydrogen bond on acidness of organic compounds in detail.

影响有机化合物酸性强弱的因素很多，本文仅以氢键对有机化合物酸性强弱的影响作了祥细的分析。

Susceptibility of soft-shelled turtle hatching to saltness 、 acidness and alkalinity

中华鳖稚鳖对水体盐度和酸碱度敏感性的研究